Lishui circular inflatable mandrel in the factory 24 hours breath test, circular inflatable mandrel is a use of rubber characteristics and high strength polymer fiber can be made of vulcanized expansion and contraction of the Peng expansion capsules of different shapes and steel templates are used together to form a cavity concrete elements, in the manufacture of hollow member, the inflatable mandrel into the middle, and filled with compressed air, inflatable mandrel is stretched to meet its expansion requirements of section design, inflation pressure and according to the company factory logo set. Inflatable mandrel withdrawn from the cavity, easy to use, economical and durable, soft and shrink when not inflated, arbitrary folded, curled, inflated after sufficient strength to withstand the pressure of concrete. This is unmatched by any conventional template. Circular inflatable mandrel for reinforced concrete pumping holes, including piles, roof trusses, roof columns, beams, construction, hydraulic engineering and pipeline blockage. Use bridge mandrel construction, inflatable mandrel pumping holes process equipment is simple, not only to save material, and has the shape changing characteristics, can be as round, oval, rectangular, arched, octagonal, trapezoidal and other pipeline Round Inflatable mandrel performance characteristics, circular inflatable mandrel 2 scientific and rational design, application inflatable mandrel, prefabricated or site pouring out of the finished component, bridge mandrel all can meet the design requirements, and simple operation, saving labor, time, Province material. Especially in a small cavity inflatable mandrel solve the difficulties of the construction personnel can not enter the inner member form removal. 3, circular inflatable mandrel has a good anti-aging properties, long service life. 4, circular inflatable mandrel with chloroprene rubber, natural rubber and nylon fabric pre-synthesis, made after the curing process after use. Very good resistance expansion strength, and elasticity and flexibility, resistance to high temperature and good out of. Fully meet the construction environment under different conditions. 5, circular inflatable mandrel in the range of -10 ℃ ~ + 90 ℃, the material does not change. Prestressed hollow concrete structures, the use of inflatable mandrel, its weight is lighter than non-prestressed solid component of 25%, for the construction site construction lighter and therefore provide favorable conditions to reduce the weight of the upper structure of the building, the pile can be shortened span diameter increases. When using the bridge mandrel release agent coated in appearance (see the manufacturer's instructions), to conduct leak tests inflatable mandrel, (which is very important in case of pouring concrete into the discovery of the leak, members will be ruined ) When no exceptions will be pulled into the inflatable mandrel steel cage, filling pressure to work pressure, the pouring of concrete, to be the initial setting of concrete (time see instructions), the bridge mandrel deflated drawn to complete the finished product forming member, do not pollute the environment every day, shipping company in east China Jiangsu: Nanjing, Suzhou, Wuxi, Changzhou, Nantong, Xuzhou, Lianyungang, Huai'an, Yancheng, Yangzhou, Zhenjiang, Taizhou, Zhejiang Suqian: Hangzhou, Jiaxing, Ningbo, Wenzhou, Taizhou, Huzhou, Shaoxing, Jinhua, Quzhou, Zhoushan, Lishui Anhui: Hefei, Bengbu, Wuhu, Ma'anshan, Huainan, Huaibei Tongling Huangshan Chuzhou, Anqing, Suzhou, Fuyang, Bozhou Chizhou Xuancheng Lu'an, Chaohu, Fujian: Fuzhou, Xiamen, Zhangzhou, Quanzhou, Putian, Sanming, Nanping, Longyan, Ningde